Method and device for microwave regulation of active oxygen vacancy to split water to produce hydrogen at low temperature

Abstract

The present application belongs to the technical field of microwave regulation and control of active oxygen vacancy to split water to produce hydrogen, and particularly relates to a method and device for microwave regulation and control of active oxygen vacancy to split water to produce hydrogen at low temperature, which comprises the following steps: microwave catalysis of an oxide, generation of oxygen by the oxide and collection of the oxygen; when the oxygen concentration generated by the oxide reaches a set concentration, the collection of oxygen is stopped, water vapor is allowed to react with the oxide, and hydrogen gas mixture is prepared; the hydrogen gas mixture is filtered to separate hydrogen gas and water vapor; and the hydrogen gas is collected. In the present application, the oxide is subjected to microwave radiation to promote the catalytic property of the oxide, so that the oxide is subjected to a redox reaction with water vapor under microwave radiation, greatly reducing the energy consumption in hydrogen production. In the method, the oxide and water vapor can be fully reacted, and oxygen and hydrogen are rapidly generated as two products in the reaction, further improving the hydrogen production efficiency while reducing the energy consumption in hydrogen production.

Description

Technical Field

[0001] This invention belongs to the field of microwave-controlled active oxygen vacancy pyrolysis water hydrogen production technology, and particularly relates to a method and apparatus for microwave-controlled active oxygen vacancy pyrolysis water hydrogen production at low temperature. Background Technology

[0002] In current research on various oxides, including rare earth oxides, doped oxides, and other oxides, many oxides can undergo redox reactions under microwave radiation. This is because these well-studied ionic conductors possess catalytic properties, are structurally very stable, and also exhibit chemical reducing properties. When rare earth oxides and other materials are triggered by microwave radiation, the power provided by the radiation exceeds the absorption threshold, causing the oxides to deoxygenate and generate active oxygen vacancies. After the microwave is turned off, oxygen atoms in water vapor can be reduced to O2 and housed in the lattice of the reduced oxide (the main crystal), thereby generating hydrogen. Existing hydrogen production devices and methods mostly rely on water electrolysis and metal-acid reactions, along with their respective hydrogen production devices, to manufacture and purify hydrogen. However, the efficiency of hydrogen production needs improvement, and existing methods and devices consume a relatively high amount of energy. Based on research into various oxides, including rare earth oxides, doped oxides, and other oxides, and the redox reactions of oxides under microwave radiation, a hydrogen production device and method can be designed to further improve hydrogen production efficiency and reduce energy consumption. Summary of the Invention

[0003] The purpose of this invention is to provide a device and method for producing hydrogen from water by microwave-controlled active oxygen vacancy splitting at low temperature, so as to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention provides the following solution: a method for producing hydrogen from water by microwave-controlled active oxygen vacancy splitting at low temperature, comprising the following steps:

[0005] Microwave radiation catalyzes the generation of oxygen vacancies in oxides, thus producing oxygen.

[0006] When the oxygen concentration reaches the set concentration, oxygen collection is stopped, and water vapor is introduced to react with the oxides to prepare a hydrogen-mixed gas.

[0007] Hydrogen gas is produced by filtering and separating a mixture of hydrogen and gas.

[0008] Preferably, the oxygen concentration is set at 0.1% of the initial oxygen concentration generated from the oxides.

[0009] Preferably, the separated water vapor is condensed and liquefied for collection.

[0010] A low-temperature microwave-controlled reactive oxygen vacancy splitting water hydrogen production device, used to implement the aforementioned low-temperature microwave-controlled reactive oxygen vacancy splitting water hydrogen production method, comprising:

[0011] The first reaction component is configured to catalyze the oxide to generate oxygen vacancies by microwave radiation to produce oxygen.

[0012] The steam generating component is configured to introduce steam into the first reaction component to react with oxides to prepare a hydrogen mixture when the oxygen concentration reaches a set concentration.

[0013] A hydrogen purification unit is configured to filter and separate the hydrogen mixture to produce hydrogen.

[0014] Preferably, the first reaction component includes:

[0015] A microwave oven has a quartz tube fixed inside, and a sample chamber is set inside the quartz tube. The oxide is placed in the sample chamber. A microwave feed inlet is also set on one side of the microwave oven, and the microwave feed inlet is aligned with the sample chamber.

[0016] The quartz tube outlet is also connected to a three-way gas pipeline. The three-way gas pipeline has one inlet and two outlets. The inlet of the three-way gas pipeline is connected to the outlet of the quartz tube. One outlet of the three-way gas pipeline is connected to an oxygen storage tank. The other outlet of the three-way gas pipeline is connected to a hydrogen purification device. The outlet of the hydrogen purification device is connected to a hydrogen storage tank. The three-way gas pipeline is configured for hydrogen collection and oxygen collection. In the oxygen collection state, the oxygen storage tank is open and the hydrogen purification device is closed. In the hydrogen collection state, the oxygen storage tank is closed and the hydrogen purification device is open.

[0017] Preferably, the three-way gas pipeline is further equipped with an oxygen concentration detection component, the oxygen concentration detection component comprising:

[0018] Three oxygen concentration monitoring heads are provided, which are respectively fixed to the air inlet end and the two air outlet ends of the three-way gas pipeline;

[0019] An oxygen concentration monitor is provided, with all the oxygen concentration monitoring heads connected to it, for detecting the oxygen concentration at the inlet and two outlet ends of the three-way gas pipeline.

[0020] Preferably, the steam generating assembly includes:

[0021] The water inlet is located at the water inlet end of the quartz tube;

[0022] An evaporator is fixed between the water inlet and the water inlet of the quartz tube. A first flow meter is also provided between the evaporator and the water inlet of the quartz tube. The first flow meter is turned on in the hydrogen collection state and turned off in the oxygen collection state.

[0023] Preferably, the hydrogen purification assembly includes:

[0024] The mixing chamber is connected to one of the exhaust ends of the three-way gas pipeline, and a drain outlet is provided on one side, with a drain flow meter installed on the drain outlet;

[0025] A hydrogen filter element is fixed on the exhaust side of the mixing chamber to filter the mixed gas in the mixing chamber.

[0026] A hydrogen storage chamber is fixed on the side of the hydrogen filter away from the mixing chamber. The exhaust end of the hydrogen storage chamber is connected to the hydrogen storage tank. A fourth flow meter is provided between the hydrogen storage chamber and the hydrogen storage tank. The fourth flow meter is turned on during the hydrogen collection state.

[0027] Preferably, an oxygen diversion pump and a second flow meter are further provided between the oxygen storage tank and one of the exhaust ends of the three-way gas pipeline; in the hydrogen collection state, the oxygen diversion pump and the second flow meter are closed, and in the oxygen collection state, the oxygen diversion pump and the second flow meter are open.

[0028] A third flow meter and a hydrogen diversion pump are also provided between the mixing chamber and the other exhaust end of the three-way gas pipeline. In the hydrogen collection state, the third flow meter and the hydrogen diversion pump are turned on, and in the oxygen collection state, the third flow meter and the hydrogen diversion pump are turned off.

[0029] Preferably, the integrated control system instrument panel is also provided on the side of the microwave oven away from the microwave feed inlet, and the integrated control system instrument panel includes:

[0030] A microwave operation instrument panel is installed on the instrument panel of the integrated control system and is connected to the microwave feed inlet. The microwave operation instrument panel controls the microwave frequency of the microwave feed inlet.

[0031] A gas flow monitoring instrument panel is installed on the instrument panel of the integrated control system to display and monitor the concentration and flow rate of hydrogen, oxygen and water vapor in the three-way gas pipeline;

[0032] A water vapor concentration monitor is installed at the exhaust end of the quartz tube, and the water vapor concentration monitor is used to detect the water vapor concentration at the exhaust end of the quartz tube.

[0033] Compared with the prior art, the present invention has the following advantages and technical effects:

[0034] This invention utilizes microwave radiation to enhance the catalytic activity of oxides, enabling them to undergo a redox reaction with water vapor under microwave radiation. Compared to other hydrogen production methods, this significantly reduces energy consumption during hydrogen production. After the microwave is turned off, oxygen atoms in the water vapor are reduced to oxygen gas, which is then contained within the lattice of the reduced oxide (the main crystal). Hydrogen gas is generated and gradually flows from the quartz tube into a hydrogen storage tank. The oxygen and hydrogen produced by the device can then be collected and stored separately. In this process, microwave radiation of various oxides allows them to fully react with water vapor, rapidly generating both oxygen and hydrogen products. This reduces energy consumption and further improves hydrogen production efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall device of the present invention;

[0037] The components include: 1. Water inlet; 2. Evaporator; 3. First flow meter; 4. Sample chamber; 5. Microwave feed inlet; 6. Microwave oven; 7. Metal mesh; 8. Water vapor concentration monitor; 9. Oxygen diversion pump; 10. Second flow meter; 11. Integrated control system instrument panel; 12. Microwave operation instrument panel; 13. Gas flow monitoring instrument panel; 14. Quartz tube; 15. Oxygen storage tank; 16. Oxygen concentration monitor; 17. Third flow meter; 18. Hydrogen diversion pump; 19. Drainage flow meter; 20. Water level display window; 21. Hydrogen filter; 22. Fourth flow meter; 23. Hydrogen storage tank; 24. Hydrogen storage chamber; 25. Mixing chamber. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Example: Refer to Figure 1A method for producing hydrogen from water by microwave-controlled active oxygen vacancy splitting at low temperature includes the following steps:

[0041] Microwave radiation catalyzes the generation of oxygen vacancies in oxides, thus producing oxygen.

[0042] Once the oxygen concentration reaches the set concentration, stop collecting oxygen and introduce water vapor to react with the oxides to prepare a hydrogen-mixed gas.

[0043] Hydrogen gas is produced by filtering and separating a mixture of hydrogen and gas.

[0044] The scheme was further optimized by setting the oxygen concentration to 0.1% of the initial oxygen concentration generated from the oxides.

[0045] The scheme was further optimized to collect the separated water vapor through condensation and liquefaction.

[0046] In this method, microwave irradiation of oxides promotes their catalytic activity, enabling them to undergo a redox reaction with water vapor under microwave irradiation. Compared to other hydrogen production methods, this significantly reduces the energy consumption during hydrogen production. After the microwave is turned off, oxygen atoms in the water vapor are reduced to oxygen gas, which is then contained within the lattice of the reduced oxide (the main crystal). Hydrogen gas is generated and gradually flows from the quartz tube into the hydrogen storage tank. The oxygen and hydrogen produced by the device can then be collected and stored separately. In this process, microwave irradiation of various oxides allows them to fully react with water vapor, rapidly generating both oxygen and hydrogen products. This reduces energy consumption and further improves hydrogen production efficiency.

[0047] A low-temperature microwave-controlled reactive oxygen vacancy splitting water hydrogen production apparatus, used to implement a low-temperature microwave-controlled reactive oxygen vacancy splitting water hydrogen production method, comprising:

[0048] The first reaction component is configured to catalyze the generation of oxygen vacancies in oxides by microwave radiation to produce oxygen.

[0049] The steam generating component is configured to introduce steam into the first reaction component to react with oxides to prepare a hydrogen mixture when the oxygen concentration reaches a set concentration.

[0050] The hydrogen purification unit is configured to filter and separate a hydrogen mixture to produce hydrogen.

[0051] The scheme has been further optimized, and the first reaction component includes:

[0052] The microwave oven 6 has a quartz tube 14 fixed inside, and a sample chamber 4 is set inside the quartz tube 14, where the oxide is placed; a microwave feed inlet 5 is also set on one side of the microwave oven 6, and the microwave feed inlet 5 is aligned with the sample chamber 4.

[0053] The outlet of the quartz tube 14 is also connected to a three-way gas pipeline. The three-way gas pipeline has one inlet and two outlets. The inlet of the three-way gas pipeline is connected to the outlet of the quartz tube 14. One outlet of the three-way gas pipeline is connected to the oxygen storage tank 15. The other outlet of the three-way gas pipeline is connected to a hydrogen purification device. The outlet of the hydrogen purification device is connected to the hydrogen storage tank 23. The three-way gas pipeline is configured to have a hydrogen collection state and an oxygen collection state. In the oxygen collection state, the oxygen storage tank 15 is open and the hydrogen purification device is closed. In the hydrogen collection state, the oxygen storage tank 15 is closed and the hydrogen purification device is open.

[0054] To further optimize the design, an oxygen concentration detection component is also installed on the three-way gas pipeline. The oxygen concentration detection component includes: three oxygen concentration monitoring heads, which are fixed at the inlet end and the two outlet ends of the three-way gas pipeline respectively; and an oxygen concentration monitor 16, which is connected to all the oxygen concentration monitoring heads and is used to detect the oxygen concentration at the inlet end and the two outlet ends of the three-way gas pipeline.

[0055] The scheme is further optimized. The steam generating component includes: a water inlet 1, which is set at the water inlet end of the quartz tube 14; an evaporator 2, which is fixed between the water inlet 1 and the water inlet end of the quartz tube 14. A first flow meter 3 is also set between the evaporator 2 and the water inlet end of the quartz tube 14. The first flow meter 3 is turned on in the hydrogen collection state and turned off in the oxygen collection state.

[0056] Further optimization of the solution includes the following hydrogen purification components:

[0057] The mixing chamber 25 is connected to one of the exhaust ends of the three-way gas pipeline, and a drain outlet is provided on one side, with a drain flow meter 19 installed on the drain outlet; the hydrogen filter element 21 is fixed on the exhaust side of the mixing chamber 25 to filter the mixed gas in the mixing chamber 25; the hydrogen storage chamber 24 is fixed on the side of the hydrogen filter element 21 away from the mixing chamber 25, and the exhaust end of the hydrogen storage chamber 24 is connected to the hydrogen storage tank 23. A fourth flow meter 22 is provided between the hydrogen storage chamber 24 and the hydrogen storage tank 23; the fourth flow meter 22 is turned on in the hydrogen collection state.

[0058] It should be noted that the hydrogen filter 21 can filter hydrogen. The diameter of hydrogen molecules (approximately 0.289 nm) is smaller than that of other molecules. The hydrogen filter in the purification device allows hydrogen molecules to pass through while blocking other gas molecules, thus expelling hydrogen and oxygen separately. This type of hydrogen filter 21 is existing technology and will not be described in detail here.

[0059] In a further optimized design, an oxygen diversion pump 9 and a second flow meter 10 are installed between the oxygen storage tank 15 and one exhaust end of the three-way gas pipeline. In the hydrogen collection state, the oxygen diversion pump 9 and the second flow meter 10 are closed, and in the oxygen collection state, the oxygen diversion pump 9 and the second flow meter 10 are open. A third flow meter 17 and a hydrogen diversion pump 18 are installed between the mixing chamber 25 and the other exhaust end of the three-way gas pipeline. In the hydrogen collection state, the third flow meter 17 and the hydrogen diversion pump 18 are open, and in the oxygen collection state, the third flow meter 17 and the hydrogen diversion pump 18 are closed.

[0060] It should be noted that the gas flow monitoring instrument panel 13 is also connected to the first flow meter 3. The gas flow monitoring instrument panel 13 controls the opening and closing of the first flow meter 3. In use, the first flow meter 3 can be directly controlled to open or close through the gas flow monitoring instrument panel 13. In addition, water can be added to the water inlet 1 based on the actual water vapor flow rate displayed by the first flow meter 3, so as to provide sufficient water vapor for the device during the hydrogen production process. When the oxygen concentration monitor 16 detects that the oxygen concentration displayed at the inlet of the three-way gas pipeline is below 0.1% and stable, the evaporator 2 is controlled to continuously generate water vapor. At this time, the microwave transmitter and the second flow meter 10 and the oxygen diversion pump 9 must be turned off first, and the first flow meter 3, the third flow meter 17, and the hydrogen diversion pump 18 are turned on at the same time to allow the water vapor to fully contact the oxide and continuously generate hydrogen.

[0061] Further optimizing the design, a comprehensive control system instrument panel 11 is also installed on the side of the microwave oven 6 away from the microwave feed inlet 5. The comprehensive control system instrument panel 11 includes: a microwave operation instrument panel 12, which is installed on the comprehensive control system instrument panel 11 and connected to the microwave feed inlet 5, and controls the microwave frequency of the microwave feed inlet 5; a gas flow monitoring instrument panel 13, which is installed on the comprehensive control system instrument panel 11 and is used to display and monitor the concentration and flow rate of hydrogen, oxygen and water vapor in the three-way gas pipeline; and a water vapor concentration monitor 8 is installed at the exhaust end of the quartz tube 14, which is used to detect the water vapor concentration at the exhaust end of the quartz tube 14.

[0062] Specifically, the microwave operation instrument panel 12 is connected to the microwave feed inlet 5. The instrument panel 12 is equipped with adjustment buttons for controlling the microwave frequency and the operating power of the microwave feed inlet 5. The current microwave frequency and operating power of the microwave feed inlet 5 can be directly displayed on the instrument panel 12, and the microwave frequency emitted by the microwave feed inlet 5 can be adjusted according to actual needs. The gas flow monitoring instrument panel 13 constantly monitors the water vapor concentration monitor 8 to ensure the water vapor concentration inside the quartz tube 14, thereby providing sufficient water vapor for the reaction to produce hydrogen.

[0063] The water inlet and exhaust ends of the quartz tube 14 are also fixed with metal mesh 7, which is used to prevent microwave leakage.

[0064] Example 1:

[0065] like Figure 1 As shown, 2 to 8 g of rare earth oxide powder (e.g., CeO2, or GaO2, Y2O3, Pr6O) is added. 11 La2O3 rare earth oxide powder was placed in sample chamber 4. The microwave frequency was set to 2450MHz and the working power to 100 to 500W. After the oxide was placed in sample chamber 4, water was injected into evaporator 2 through water inlet 1. Evaporator 2, second flow meter 10 and oxygen siphon pump 9 were turned on, first flow meter 3 was turned off, and microwave feed inlet 5 was turned on. Under microwave, oxygen atoms in the oxide were oxidized and reduced to produce oxygen and generated oxygen vacancies. The oxygen was stored in oxygen storage tank 15. When the oxygen concentration monitor 16 showed that the oxygen concentration at the inlet of the three-way gas pipeline was below 0.1% and stable, evaporator 2 continued to produce water vapor. First, microwave, second flow meter 10 and oxygen siphon pump 9 were turned off, and then first flow meter 3, third flow meter 17 and hydrogen siphon pump 18 were turned on. The water vapor came into full contact with the oxide and continued to produce hydrogen. It mixed with the incompletely reacted water vapor and entered the hydrogen purification device under the action of hydrogen siphon pump.

[0066] Turn on the hydrogen priming pump 18, and the mixed gas enters the mixing chamber 25 of the hydrogen purification device through the priming pump. After the water vapor comes into contact with the chamber wall of the mixing chamber 25, it liquefies into liquid water and flows into the bottom water storage tank. The hydrogen filter 21 allows hydrogen to pass through into the hydrogen storage chamber 24 and prevents other gases from passing through, thus isolating the hydrogen from other gases. Turn on the fourth flow meter 22 to discharge the hydrogen from the hydrogen exhaust port, cool it, and store it.

[0067] Example 2:

[0068] like Figure 1As shown, 3 to 10 g of rare earth oxide powder (e.g., WO2, or other oxide powders such as TiO2) is placed in sample chamber 4. Similarly, the microwave frequency is set to 2450 MHz, and the operating power is 100 to 500 W. After the oxide is placed in sample chamber 4, water is injected into evaporator 2 through water inlet 1. Evaporator 2, second flow meter 10, and oxygen pump 9 are turned on, first flow meter 3 is turned off, and microwave feed inlet 5 is turned on. Under microwave conditions, oxygen atoms in the oxide are oxidized and reduced... The system generates oxygen and creates oxygen vacancies, storing the oxygen in the oxygen storage tank 15. When the oxygen concentration monitor 16 shows that the oxygen concentration at the inlet of the three-way gas pipeline is below 0.1% and stable, the evaporator 2 continuously generates water vapor. First, the microwave, the second flow meter 10, and the oxygen diversion pump 9 are turned off. Then, the first flow meter 3, the third flow meter 17, and the hydrogen diversion pump 18 are turned on. The water vapor comes into full contact with the oxide, continuously generating hydrogen, which mixes with the incompletely reacted water vapor and enters the hydrogen purification device under the action of the hydrogen diversion pump.

[0069] Turn on the hydrogen priming pump 18, and the mixed gas enters the mixing chamber 25 of the hydrogen purification device through the priming pump. After the water vapor comes into contact with the chamber wall of the mixing chamber 25, it liquefies into liquid water and flows into the bottom water storage tank. The hydrogen filter 21 allows hydrogen to pass through into the hydrogen storage chamber 24 and prevents other gases from passing through, thus isolating the hydrogen from other gases. Turn on the fourth flow meter 22 to discharge the hydrogen from the hydrogen exhaust port, cool it, and store it.

[0070] Example 3:

[0071] like Figure 1 As shown, 3 to 10 g of doped rare earth oxide powder (e.g., GDC, or other doped oxide powders such as YSZ) is placed in sample chamber 4. Similarly, the microwave frequency is set to 2450 MHz, and the operating power is 100 to 500 W. After the oxide is placed in sample chamber 4, water is injected into evaporator 2 through water inlet 1. Evaporator 2, second flow meter 10, and oxygen pump 9 are turned on, first flow meter 3 is turned off, and microwave feed inlet 5 is turned on. Under microwave conditions, oxygen atoms in the oxide... The process involves reducing oxygen to produce oxygen vacancies, which are then stored in the oxygen storage tank 15. Once the oxygen concentration monitor 16 indicates that the oxygen concentration at the inlet of the three-way gas pipeline is below 0.1% and stable, the evaporator 2 continuously generates water vapor. First, the microwave, the second flow meter 10, and the oxygen diversion pump 9 are turned off. Then, the first flow meter 3, the third flow meter 17, and the hydrogen diversion pump 18 are turned on. The water vapor comes into full contact with the oxide, continuously generating hydrogen, which mixes with the incompletely reacted water vapor and enters the hydrogen purification device under the action of the hydrogen diversion pump.

[0072] Turn on the hydrogen priming pump 18, and the mixed gas enters the mixing chamber 25 of the hydrogen purification device through the priming pump. After the water vapor comes into contact with the chamber wall of the mixing chamber 25, it liquefies into liquid water and flows into the bottom water storage tank. The hydrogen filter 21 allows hydrogen to pass through into the hydrogen storage chamber 24 and prevents other gases from passing through, thus isolating the hydrogen from other gases. Turn on the fourth flow meter 22 to discharge the hydrogen from the hydrogen exhaust port, cool it, and store it.

[0073] Example 4:

[0074] like Figure 1 As shown, 2 to 8 g of rare earth oxide powder (e.g., CeO2, or GaO2, Y2O3, Pr6O) is added. 11 La2O3 rare earth oxide powder was placed in sample chamber 4. The microwave frequency was set to 915MHz and the working power to 100 to 500W. After the oxide was placed in sample chamber 4, water was injected into evaporator 2 through water inlet 1. Evaporator 2, second flow meter 10 and oxygen siphon pump 9 were turned on, first flow meter 3 was turned off, and microwave feed inlet 5 was turned on. Under microwave, oxygen atoms in the oxide were oxidized and reduced to produce oxygen and generated oxygen vacancies. The oxygen was stored in oxygen storage tank 15. When the oxygen concentration monitor 16 showed that the oxygen concentration at the inlet of the three-way gas pipeline was below 0.1% and stable, evaporator 2 continued to produce water vapor. First, microwave, second flow meter 10 and oxygen siphon pump 9 were turned off, and then first flow meter 3, third flow meter 17 and hydrogen siphon pump 18 were turned on. The water vapor came into full contact with the oxide and continued to produce hydrogen. It mixed with the incompletely reacted water vapor and entered the hydrogen purification device under the action of hydrogen siphon pump.

[0075] Turn on the hydrogen priming pump 18, and the mixed gas enters the mixing chamber 25 of the hydrogen purification device through the priming pump. After the water vapor comes into contact with the chamber wall of the mixing chamber 25, it liquefies into liquid water and flows into the bottom water storage tank. The hydrogen filter 21 allows hydrogen to pass through into the hydrogen storage chamber 24 and prevents other gases from passing through, thus isolating the hydrogen from other gases. Turn on the fourth flow meter 22 to discharge the hydrogen from the hydrogen exhaust port, cool it, and store it.

[0076] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0077] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A method for producing hydrogen from water by microwave-controlled active oxygen vacancy splitting at low temperature, characterized in that, Includes the following steps: Microwave radiation catalyzes the generation of oxygen vacancies in oxides, thus producing oxygen. When the oxygen concentration reaches the set concentration, oxygen collection is stopped, and water vapor is introduced to react with the oxides to prepare a hydrogen mixture. The set concentration of oxygen is 0.1% of the initial oxygen concentration generated by the oxides. The hydrogen mixture is filtered and separated to produce hydrogen, and the separated water vapor is condensed and liquefied for collection. When the oxygen concentration monitor (16) shows that the oxygen concentration at the inlet of the three-way gas pipeline is below 0.1% and stable, the evaporator (2) is controlled to continuously generate water vapor. At this time, the microwave transmitter is turned off and the second flow meter (10) and oxygen diversion pump (9) are turned off. At the same time, the first flow meter (3), the third flow meter (17) and the hydrogen diversion pump (18) are turned on to make the water vapor fully contact the oxide and continuously generate hydrogen.

2. A low-temperature microwave-controlled active oxygen vacancy pyrolysis water hydrogen production device, used to implement the low-temperature microwave-controlled active oxygen vacancy pyrolysis water hydrogen production method according to claim 1, characterized in that, include: The first reaction component is configured to catalyze the oxide to generate oxygen vacancies by microwave radiation to produce oxygen. The steam generating component is configured to introduce steam into the first reaction component to react with oxides to prepare a hydrogen mixture when the oxygen concentration reaches a set concentration. A hydrogen purification unit is configured to filter and separate the hydrogen mixture to produce hydrogen.

3. The low-temperature microwave-controlled active oxygen vacancy splitting water hydrogen production device according to claim 2, characterized in that, The first reaction component includes: A microwave oven (6) has a quartz tube (14) fixed inside, and a sample chamber (4) is provided inside the quartz tube (14), and the oxide is placed in the sample chamber (4); a microwave feed inlet (5) is also provided on one side of the microwave oven (6), and the microwave feed inlet (5) is aligned with the sample chamber (4). The outlet of the quartz tube (14) is also connected to a three-way gas pipeline. The three-way gas pipeline has an inlet and two outlets. The inlet of the three-way gas pipeline is connected to the outlet of the quartz tube (14). One outlet of the three-way gas pipeline is connected to an oxygen storage tank (15). The other outlet of the three-way gas pipeline is connected to a hydrogen purification device. The outlet of the hydrogen purification device is connected to a hydrogen storage tank (23). The three-way gas pipeline is configured to have a hydrogen collection state and an oxygen collection state. In the oxygen collection state, the oxygen storage tank (15) is open and the hydrogen purification device is closed. In the hydrogen collection state, the oxygen storage tank (15) is closed and the hydrogen purification device is open.

4. The low-temperature microwave-controlled active oxygen vacancy splitting water hydrogen production device according to claim 3, characterized in that, The three-way gas pipeline is also equipped with an oxygen concentration detection component, which includes: three oxygen concentration monitoring heads, which are respectively fixed to the inlet end and the two outlet ends of the three-way gas pipeline. Oxygen concentration monitor (16), all of the oxygen concentration monitoring heads are connected to the oxygen concentration monitor (16) for detecting the oxygen concentration at the inlet end and the two outlet ends of the three-way gas pipeline.

5. The low-temperature microwave-controlled active oxygen vacancy splitting water hydrogen production device according to claim 3, characterized in that, The steam generating assembly includes: Water inlet (1) is located at the water inlet end of the quartz tube (14); An evaporator (2) is fixed between the water inlet (1) and the water inlet of the quartz tube (14). A first flow meter (3) is also provided between the evaporator (2) and the water inlet of the quartz tube (14). In the hydrogen collection state, the first flow meter (3) is turned on, and in the oxygen collection state, the first flow meter (3) is turned off.

6. The low-temperature microwave-controlled active oxygen vacancy splitting water hydrogen production device according to claim 3, characterized in that: The hydrogen purification assembly includes: The mixing chamber (25) is connected to one of the exhaust ends of the three-way gas pipe, and a drain outlet is provided on one side. A drain flow meter (19) is provided on the drain outlet. A hydrogen filter element (21) is fixed on the exhaust side of the mixing chamber (25) to filter the mixed gas in the mixing chamber (25); A hydrogen storage chamber (24) is fixed on the side of the hydrogen filter (21) away from the mixing chamber (25). The exhaust end of the hydrogen storage chamber (24) is connected to the hydrogen storage tank (23). A fourth flow meter (22) is provided between the hydrogen storage chamber (24) and the hydrogen storage tank (23). The fourth flow meter (22) is turned on in the hydrogen collection state.

7. The low-temperature microwave-controlled active oxygen vacancy splitting water hydrogen production device according to claim 3, characterized in that: An oxygen pump (9) and a second flow meter (10) are also provided between the oxygen storage tank (15) and one of the exhaust ends of the three-way gas pipeline; in the hydrogen collection state, the oxygen pump (9) and the second flow meter (10) are closed, and in the oxygen collection state, the oxygen pump (9) and the second flow meter (10) are turned on. A third flow meter (17) and a hydrogen diversion pump (18) are also provided between the mixing chamber (25) and the other exhaust end of the three-way gas pipeline. In the hydrogen collection state, the third flow meter (17) and the hydrogen diversion pump (18) are turned on, and in the oxygen collection state, the third flow meter (17) and the hydrogen diversion pump (18) are turned off.

8. The low-temperature microwave-controlled active oxygen vacancy splitting water hydrogen production device according to claim 3, characterized in that, The microwave oven (6) is also provided with a comprehensive control system instrument panel (11) on the side away from the microwave feed inlet (5), and the comprehensive control system instrument panel (11) includes: A microwave operation instrument panel (12) is installed on the instrument panel (11) of the integrated control system and is connected to the microwave feed inlet (5). The microwave operation instrument panel (12) controls the microwave frequency of the microwave feed inlet (5). A gas flow monitoring instrument panel (13) is installed on the instrument panel (11) of the integrated control system for displaying and monitoring the concentration and flow rate of hydrogen, oxygen and water vapor in the three-way gas pipeline; A water vapor concentration monitor (8) is provided at the exhaust end of the quartz tube (14), and the water vapor concentration monitor (8) is used to detect the water vapor concentration at the exhaust end of the quartz tube (14).

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